Senior QA Automation Engineer (C#/.NET, Playwright) - Remote

Avenga Water Well Service, LLC; Kraków; On-site; PLN 150,000 - 230,000; Full time

Job summary

Avenga Water Well Service, LLC is seeking a Senior AQA Engineer to design and own modern, scalable test automation frameworks using C#/.NET and Playwright. You will build reliable UI, API, integration, end-to-end, and regression automation, and integrate testing into CI/CD pipelines.

You will collaborate with solution architects, developers, QA engineers, and domain experts to define effective test strategies, investigate failures, and promote shift-left quality engineering across cloud-native,

Qualifications

• Extensive commercial experience with C#/.NET and software engineering principles.
• Strong experience designing and implementing test automation frameworks at senior or architect level.
• Hands-on expertise with Playwright, preferably with C#/.NET.
• Strong knowledge of API and integration testing and tools such as REST/HTTP-based testing frameworks.
• Experience with CI/CD, Git, and automated quality gates.
• Strong understanding of software architecture, design patterns, maintainable automation, and testability.
• Experience testing distributed systems, microservices, and enterprise applications.

Responsibilities

• Design and own the architecture of modern, scalable test automation frameworks using C#/.NET and Playwright.
• Develop reliable UI, API, integration, end-to-end, and regression automation.
• Integrate automated testing into CI/CD pipelines and support continuous quality practices.
• Drive automation of complex, distributed, and highly integrated telecommunications systems.
• Collaborate with solution architects, developers, QA engineers, and domain experts to identify effective test strategies.
• Investigate test failures, improve framework stability, and continuously optimize automation execution.
• Promote shift-left testing, quality engineering, and risk-based test automation approaches.
• Contribute to the evolution of testing practices for cloud-native, microservices, and API-driven architectures.

Skills

C#/.NET

Test automation design

Distributed systems testing

Testability concepts

Collaboration with engineers

Tools

Playwright

REST/HTTP testing

CI/CD

Git

Architecture patterns

Job description

Avenga Water Well Service, LLC is seeking a Senior AQA Engineer to design and own modern, scalable test automation frameworks using C#/.NET and Playwright. You will build reliable UI, API, integration, end-to-end, and regression automation, and integrate testing into CI/CD pipelines.

You will collaborate with solution architects, developers, QA engineers, and domain experts to define effective test strategies, investigate failures, and promote shift-left quality engineering across cloud-native,